Milk-can cover and method of forming the same



March 13, 1928. 1,662,184

C. A. COMP MlLK CAN COVER ANDMETHOD OF FORMING THE SAME Filed Sept. 21,1925 fl 7 A A W by F I J 7 Jig 4 anucul'o'c CJzardas/Y. C0721 to renderthe device insanitary.

Patented Mar. 13, 1928.

UNITED sTATEs PATENT OFFICE.

cIIAnLns A. coMr, or nnrnorr. MICHIGAN, AssIenon To aunt STAMPINGOOMI'ANY, or person, MICHIGAN, A conronarrron OF MICHIGAN.

MILK-CAN COVER AND METHOD OF FORMING THE SAME.

Application filed September The invention relates to can covers moreparticularly designed for closures of milk cans and the inventionconsists in the construction and method of forming the same ashereinafter set forth.

In the drawings;

Figure 1 is a central longitudinal section through the cover.

Figures 25 are diagrammatic views show ing successive steps in themethod of forming the cover.

In the manufacture of closures for milk ans it is very essential toavoid the formation of any crevice in which dirt might lodge It is alsousual to form such covers with a portion for fitting within the neck ormouth of the can and a bell shaped flange overhanging and protecting themouth of the can.

My improved construction designed to avoid the formation of crevices andat the same time to secure a strong attachment be tween the cover properand the bell shaped flange. It is also an object to obtain aconstruction which may be easily manufactured.

In detail A is the cover proper which is preferably drawn from a sheetmetal blank to form the integral end A and annular flange A with arounded fillet B connecting the same. G is the bell shaped flange whichis first formed as shown in Figure 2 from an in'iperforate sheet metalblank fashioned with a recess D therein corresponding in diameter to theexternal diameter of the flange A The web E of the recess portion isthen cut away as shown in Figure 4; leaving an annular flange F adaptedto closely fit the flange A of the member A. The members A and C maythen be united by suitable means such as spot welding or riveting afterwhich the whole structure tinned. The outer edge of the bell shapedflange C is provided with the usual bead G.

With the construction as just described the only part of the structurewhich is exposed to the milk is the inner surface of the member Aincluding the flange A thereof. This inner surface is free from anycrevice and the rounded fillet B will. not permit the retention of dirttherein. On the outside of the cover a crevice may be formed between themembers A and C but as this is never exposed to contact with the milk itis not eb- 21, 1925. 1 Serial No. 57,772.

jectionable. lllechanically the structure is exceptionally strong due tothe integral construction of the head Aand flange A together with thewide bearing of the flange 1) thereon.

What I claim as my invention is:

1. A closure comprising a pressed sheet metal blank having an integralhead portion, annular cylindrical flange portion and rounded fillettherebetween and a bell flange member having an inturned portion externallyconnect-ed to said first mentioned memher and forming areinforcement adjacent said rounded fillet.

2. A closure comprising a pressed sheet metal member having an integralhead portion, an annular cylindrical flange portion with a roundedfillet therebetween and a bell flange member provided with an inturnedcylindrical flange externally fitting and secured to said firstmentioned member adjacent said fillet.

A closure comprising a pressed sheet metal flange having an integral endportion, annular cylindrical flange portion and a rounded fillettherebetween, and a bell flange member having a beaded outer edge and areversely bent cylindrical flange at its inner edge fitting andexternally secured to the cylindrical flange of said first mentionedmember adjacent the said fillet, forming a double ply structure adjacentsaid fil let and providing a guard extending laterally in the horizontalplane of said fillet.

4. The method of forming closures comprising the pressing of a sheetmetal blank to form a cylindrical flange and integral head, pressing asecond blank to form a cylindrical recess with an integral web and asurrounding bell shaped flange, removing the web portion telescopicallyengaging the remaining cylindrical flange with the cylindrical flange ofthe first member and securing the same together.

5. The method of forming closures comprising the pressing of a sheetmetal blank to form a cylindrical flange and integral head, pressing asecond member to form a cylindrical recess corresponding to the externaldiameter of the cylindrical flange of said first member, and with anintegral web or bottom through said recess, forming an annular bellflange on said second member,

removing the web or bottom of the recess portion and engaging andsecuring the cylindrical flange upon the cylindrical flange of the firstmentioned member.

6. The method of forming closures comprising the pressing of a sheetmetal blank to form a cylindrical flange with an integral head, pressinga second member to form a cylindrical recess to fit the externaldiameter of said first mentioned member and having an integral centralweb or bottom, said member being also formed with a surrounding bellflange having'a beaded lower edge, removing the web or bottom of saidrecess and engaging the cylindrical flange of being bell-shaped and theother well being straight and being adapted to be secured to the outerperiphery of the side wall of the cup-shaped member.

In testimony whereof I ailix my signature.

CHARLES A. COMP.

